20212112 has 20 divisors (see below), whose sum is σ = 39353136. Its totient is φ = 10056480.

The previous prime is 20212111. The next prime is 20212117. The reversal of 20212112 is 21121202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20212093 and 20212102.

It is not an unprimeable number, because it can be changed into a prime (20212111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 383 + ... + 6369.

Almost surely, 2^20212112 is an apocalyptic number.

It is an amenable number.

20212112 is a deficient number, since it is larger than the sum of its proper divisors (19141024).

20212112 is a wasteful number, since it uses less digits than its factorization.

20212112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6206 (or 6200 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 20212112 is about 4495.7882512414. The cubic root of 20212112 is about 272.3979900418.

Adding to 20212112 its reverse (21121202), we get a palindrome (41333314).

The spelling of 20212112 in words is "twenty million, two hundred twelve thousand, one hundred twelve".